Heel-burnishing tool



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. A. STIRGKLBR.

HEEL BURNISHING TOOL.

No. 292.597. Patented Jan. 29,1884

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UNITED STATES PATENT OFFICE. I

HEEL-BURNISHFIN'G TOOL.-

SP CIFICATION forming To all whom it may concern Be it known that I, ALBERT E. STIROKLER,- of Worcester, in the county of Worcester and State of Massachusetts, have invented certain Improvements in Heel-Burnishing Tools, of which the following is a specification.

This invention has for its object to provide an improved rotary tool for setting or bur-- nishing the edges of boot and shoe soles and heels; and it consists in a tool having its perimeter in the form of a polygon-from which the angles have been removed or rounded, so as to form salient curved surfaces. connecting the sides'of the polygon, as I will now proceed to describe.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a section of a rotary burnishing-tool, taken at right angles to the axis thereof. Fig. 2 represents a section on plane of line as 00, Fig. 1, showing a tool adapted to burnish a sole-edge.

The same letters indicate the same parts in all the figures.

In constructing my improved burnishingtool I prepare a polygonal-blank having any desired number of sides 8, and remove or reduce the angles so as to form salient curves or curved surfaces 8, each curve connecting two sides, 8, so that the perimeter of the tool in any plane at right angles to its axis is 'made up of alternating straight and curved surfaces, as shown. It will be seen that the curved surfaces 8 project farther from the center of the tool than'the central portions of the intermediate straight surfaces; hence when the tool is rotated the said curved surfaces will act more forcibly than the straight .surfaces on a sole or heel edge presented to the tool, and give a rapid series of blows or pressures against said edge, and at the same time exert a rubbing or burnishing action thereon. The straight surfaces or sides 8 act as depressions between the acting curved surfaces 3, and permit a slight deposit between the rounded or, convex surfaces, of wax or. equivalent material applied to a heel or sole edge to facilitate the burnishing operation. The

- straight form of said surfaces 8 prevents the wax, blacking, or other material from being embedded or packed solidly between the acting surfaces 8, and enables said material to part of Letters Patent No. 292,597, dated January 29, 1884. Application filed November 12, 1883. (No model.) d

creep or move gradually along from one shoulremoved from the heel or Sole edge by one convex surface to the next succeeding convex surface, the material being thus repeatedly supplied to the surface to be burnished. This function last described distinguishes my improved tool from ribbed burnishing-tools heretofore used, in which the burnishing-surface is made up of alternate convex shoulders or acting-surfaces and intermediate re-entrant angles or recesses. In such tools the wax or other burnishing material accumulates in said reentrant angles or recesses, and becomes solidly packed therein, so as to entirely fill the recesses and give the tool a continuous curvature. on its acting surface, thus defeating the object sought in forming ribs thereon. This objection does notapplyto'my improved tool, as before stated.

molded transversely, or in a plane parallel the edge to be burnished.

In case the tool is intended for use on soleedges, it may have a rand-lip, r, at one edge, and a lip or rest, r, at the other edge, for the face of the sole, as shown in Fig. 2. The perinieter of said lips may be circular instead of polygonal.

When the tool is adapted for heel-burnishing, it may have a lip or rest for the face of the top-lift.

It will be seen that the reduction or wear of the curved surfaces 8, caused by the use of the tool, does not affect the operative relation of said curved surfaces to the straight surfaces 8. The tool can therefore be worn down until the curved surfaces so encroach upon the straight surfaces as to make the perimeter of the tool impaired.

I claini- 1-. A rotary burnishing-tool having ape- 2. A rotary burnishing-tool having its der to the next, thus presenting the material 1 The burnishing-surface may be curved or with the axis of the tool, to fit the curvature of practically circular before its usefulness is working perimeter composed of surfaces 8, i to this specification, in the presence 01' two which are straight in planes in the direction subscribing witnesses, this 29th day of Octoof the circumference of the too], said planes ber, 1883.

being connected by curved surfaces 8, and ALBERT E. STIRGKLEP. 5 having lips, as 1- or 1", at the edge of the too], \Vitnesses:

substantially as set forth. M. B. TOWXSENI),

In testimony whereofI have signed myname C. F. BROWN. 

